WO2002010786A3 - Open tem resonators for mri - Google Patents

Open tem resonators for mri Download PDF

Info

Publication number
WO2002010786A3
WO2002010786A3 PCT/US2001/024040 US0124040W WO0210786A3 WO 2002010786 A3 WO2002010786 A3 WO 2002010786A3 US 0124040 W US0124040 W US 0124040W WO 0210786 A3 WO0210786 A3 WO 0210786A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
aperture
radio frequency
field unit
frequency magnetic
Prior art date
Application number
PCT/US2001/024040
Other languages
French (fr)
Other versions
WO2002010786A2 (en
Inventor
Thomas J Vaughan
Gregor Adriany
Kamil Ugurbil
Original Assignee
Univ Minnesota
Thomas J Vaughan
Gregor Adriany
Kamil Ugurbil
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Minnesota, Thomas J Vaughan, Gregor Adriany, Kamil Ugurbil filed Critical Univ Minnesota
Priority to JP2002516661A priority Critical patent/JP2004504906A/en
Priority to CA002417525A priority patent/CA2417525A1/en
Priority to EP01955026A priority patent/EP1305649A2/en
Priority to AU2001277234A priority patent/AU2001277234A1/en
Priority to KR10-2003-7001450A priority patent/KR20030036663A/en
Publication of WO2002010786A2 publication Critical patent/WO2002010786A2/en
Publication of WO2002010786A3 publication Critical patent/WO2002010786A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/345—Constructional details, e.g. resonators, specially adapted to MR of waveguide type
    • G01R33/3453—Transverse electromagnetic [TEM] coils

Abstract

An apparatus comprises a radio frequency magnetic field unit to generate a desired magnetic field. In one embodiment, the radio frequency magnetic field unit includes a first aperture that is substantially unobstructed and a second aperture contiguous to the first aperture. In an alternative embodiment, the radio frequency magnetic field unit includes a first side aperture, a second side aperture and one or more end apertures. In one embodiment of a method, a current element is removed from a radio frequency magnetic field unit to form a magnetic field unit having an aperture. In an alternative embodiment, two current elements located opposite from one another in a radio frequency magnetic field unit are removed to form a magnetic filed unit having a first side aperture and a second side aperture.
PCT/US2001/024040 2000-07-31 2001-07-31 Open tem resonators for mri WO2002010786A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2002516661A JP2004504906A (en) 2000-07-31 2001-07-31 High frequency magnetic field unit
CA002417525A CA2417525A1 (en) 2000-07-31 2001-07-31 Open tem resonators for mri
EP01955026A EP1305649A2 (en) 2000-07-31 2001-07-31 Open tem resonators for mri
AU2001277234A AU2001277234A1 (en) 2000-07-31 2001-07-31 Open TEM resonators for MRI
KR10-2003-7001450A KR20030036663A (en) 2000-07-31 2001-07-31 Radio frequency magnetic field unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22214400P 2000-07-31 2000-07-31
US60/222,144 2000-07-31

Publications (2)

Publication Number Publication Date
WO2002010786A2 WO2002010786A2 (en) 2002-02-07
WO2002010786A3 true WO2002010786A3 (en) 2002-06-13

Family

ID=22831036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/024040 WO2002010786A2 (en) 2000-07-31 2001-07-31 Open tem resonators for mri

Country Status (8)

Country Link
US (4) US6788056B2 (en)
EP (2) EP2034325A1 (en)
JP (1) JP2004504906A (en)
KR (1) KR20030036663A (en)
CN (1) CN1466691A (en)
AU (1) AU2001277234A1 (en)
CA (1) CA2417525A1 (en)
WO (1) WO2002010786A2 (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7598739B2 (en) * 1999-05-21 2009-10-06 Regents Of The University Of Minnesota Radio frequency gradient, shim and parallel imaging coil
KR20030036663A (en) * 2000-07-31 2003-05-09 리전츠 오브 더 유니버스티 오브 미네소타 Radio frequency magnetic field unit
US7412208B1 (en) * 2002-03-11 2008-08-12 Agilent Technologies, Inc. Transmission system for transmitting RF signals, power and control signals via RF coaxial cables
AU2003233602A1 (en) 2002-05-17 2003-12-02 Mr Instruments, Inc. A cavity resonator for mr systems
WO2005006007A1 (en) * 2003-06-30 2005-01-20 General Electric Company Open peripheral vascular coil and method of providing peripheral vascular imaging
US7345481B2 (en) * 2003-11-18 2008-03-18 Koninklijke Philips Electronics N.V. Hybrid TEM/birdcage coil for MRI
DE102004006322B4 (en) * 2004-02-10 2013-09-12 RAPID Biomedizinische Geräte RAPID Biomedical GmbH Imaging device for use of nuclear magnetic resonance
AU2005242783A1 (en) * 2004-05-07 2005-11-24 Regents Of The University Of Minnesota Multi-current elements for magnetic resonance radio frequency coils
US7145339B2 (en) * 2004-10-07 2006-12-05 Invivo Corporation Method and apparatus for discrete shielding of volume RFcoil arrays
US7442085B2 (en) 2005-01-14 2008-10-28 Molex Incorporated Filter connector
JP2008532609A (en) * 2005-03-10 2008-08-21 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Ultra-short MRI body coil
US7659719B2 (en) 2005-11-25 2010-02-09 Mr Instruments, Inc. Cavity resonator for magnetic resonance systems
US8022705B2 (en) * 2006-03-09 2011-09-20 Insight Neuroimaging Systems, Llc Microstrip coil designs for MRI devices
US20080157768A1 (en) * 2006-11-24 2008-07-03 Lovell Simon A Open coil for magnetic resonance imaging
US8193809B2 (en) * 2007-05-03 2012-06-05 Regents Of The University Of Minnesota Three dimensional RF coil structures for field profiling
US8299681B2 (en) 2009-03-06 2012-10-30 Life Services, LLC Remotely adjustable reactive and resistive electrical elements and method
JP5384171B2 (en) * 2009-04-02 2014-01-08 株式会社日立メディコ Antenna apparatus and magnetic resonance inspection apparatus
US7994788B2 (en) * 2009-04-03 2011-08-09 General Electric Company Short hybrid microstrip magnetic resonance coils
US8125226B2 (en) * 2009-07-02 2012-02-28 Agilent Technologies, Inc. Millipede surface coils
US8854042B2 (en) 2010-08-05 2014-10-07 Life Services, LLC Method and coils for human whole-body imaging at 7 T
JP5248557B2 (en) * 2010-07-29 2013-07-31 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Magnetic resonance imaging system
US8604791B2 (en) 2010-09-09 2013-12-10 Life Services, LLC Active transmit elements for MRI coils and other antenna devices
US9097769B2 (en) 2011-02-28 2015-08-04 Life Services, LLC Simultaneous TX-RX for MRI systems and other antenna devices
DE102011006157B4 (en) * 2011-03-25 2016-06-16 Bruker Biospin Ag Double tuned RF resonator
US9488705B2 (en) * 2011-07-20 2016-11-08 Koninklijke Philips N.V. Wireless local transmit coils and array with controllable load
US9500727B2 (en) 2012-04-20 2016-11-22 Regents Of The University Of Minnesota System and method for control of RF circuits for use with an MRI system
KR101967241B1 (en) 2013-01-16 2019-04-09 삼성전자주식회사 RF coil device, magnetic resonance apparatus employing the same, and method of operating the RF coil device
US10191128B2 (en) 2014-02-12 2019-01-29 Life Services, LLC Device and method for loops-over-loops MRI coils
US10288711B1 (en) 2015-04-30 2019-05-14 Life Services, LLC Device and method for simultaneous TX/RX in strongly coupled MRI coil loops
US10827948B1 (en) 2015-11-25 2020-11-10 Life Services, LLC Method and apparatus for multi-part close fitting head coil
US10324146B2 (en) * 2016-01-12 2019-06-18 Life Services, LLC Method and apparatus for multi-part body coil
WO2018097860A1 (en) * 2016-11-25 2018-05-31 General Electric Company A radio frequency head coil for a magnetic resonance imaging system and methods thereof
US11408951B2 (en) * 2020-04-24 2022-08-09 MR CoilTech Limited Open-face, dual-mode head coil for clinical imaging in ultra-high field MRI scanner
CN111708089B (en) * 2020-06-30 2021-09-17 中国矿业大学 Electromagnetic induction coal face structure detection method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692705A (en) * 1983-12-23 1987-09-08 General Electric Company Radio frequency field coil for NMR
US4746866A (en) * 1985-11-02 1988-05-24 U.S. Philips Corporation High-frequency coil system for a magnetic resonance imaging apparatus
US4992737A (en) * 1988-11-18 1991-02-12 Bruker Medizintechnik Gmbh Sample head for NMR tomography
US5045792A (en) * 1985-08-14 1991-09-03 Picker International, Inc. Split and non-circular magnetic resonance probes with optimum field uniformity
JPH08257011A (en) * 1995-03-28 1996-10-08 Ge Yokogawa Medical Syst Ltd Bird cage coil for magnetic resonance imaging (mri)

Family Cites Families (120)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757204A (en) * 1972-02-28 1973-09-04 Varian Associates Long the sample cavity resonator structure for an epr spectrometer employing dielectric material for improving rf electric and magnetic field uniformity a
US4443713A (en) * 1978-10-30 1984-04-17 Phillips Petroleum Company Waveform generator
US4439733A (en) * 1980-08-29 1984-03-27 Technicare Corporation Distributed phase RF coil
DE3133432A1 (en) 1981-08-24 1983-03-03 Siemens AG, 1000 Berlin und 8000 München HIGH-FREQUENCY FIELD DEVICE IN A NUCLEAR RESONANCE APPARATUS
US4463328A (en) * 1982-05-17 1984-07-31 University Of South Carolina Capacitively shortened coaxial resonators for nuclear magnetic resonance signal reception
US4590427A (en) * 1983-03-28 1986-05-20 The United States Of America As Represented By The United States Department Of Energy Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging
US4602155A (en) 1983-07-25 1986-07-22 Bei Electronics, Inc. Zero reference generating method and apparatus for optical encoders
US4694255A (en) 1983-11-04 1987-09-15 General Electric Company Radio frequency field coil for NMR
DE3347597A1 (en) 1983-12-30 1985-07-18 Philips Patentverwaltung Gmbh, 2000 Hamburg HIGH-FREQUENCY COIL ARRANGEMENT FOR GENERATING AND / OR RECEIVING ALTERNATIVE MAGNETIC FIELDS
GB8405066D0 (en) * 1984-02-27 1984-04-04 Picker Int Ltd Coil arrangements
DE3408581A1 (en) * 1984-03-09 1985-09-12 Robert Bosch Gmbh, 7000 Stuttgart RESONATOR
FR2567647B1 (en) * 1984-07-10 1987-12-18 Thomson Cgr DEVICE FOR CREATING AND / OR RECEIVING AN ALTERNATE MAGNETIC FIELD FOR APPARATUS EXPLOITING NUCLEAR MAGNETIC RESONANCE
US4620155A (en) * 1984-08-16 1986-10-28 General Electric Company Nuclear magnetic resonance imaging antenna subsystem having a plurality of non-orthogonal surface coils
US4634980A (en) * 1984-08-16 1987-01-06 Picker International, Inc. Nuclear magnetic resonance radio frequency antenna
US4680548A (en) * 1984-10-09 1987-07-14 General Electric Company Radio frequency field coil for NMR
DE3504905A1 (en) 1985-02-13 1986-08-14 J. Kühn GmbH & Co Präzisionswerkzeug KG, 4270 Dorsten TOOL HOLDER OR THE LIKE
US4691163A (en) 1985-03-19 1987-09-01 Elscint Ltd. Dual frequency surface probes
DE3515190A1 (en) 1985-04-26 1986-11-06 Siemens AG, 1000 Berlin und 8000 München CORE SPIN TOMOGRAPHY UNIT
US4724389A (en) * 1985-05-08 1988-02-09 Medical College Of Wisconsin, Inc. Loop-gap resonator for localized NMR imaging
FR2583172B1 (en) * 1985-06-07 1987-11-20 Thomson Cgr HIGH FREQUENCY ANTENNA FOR APPARATUS FOR MEASURING NUCLEAR MAGNETIC RESONANCE
DE3522401A1 (en) 1985-06-22 1987-01-02 Bruker Medizintech SAMPLE HEAD FOR NMR TOMOGRAPHY
US4839594A (en) * 1987-08-17 1989-06-13 Picker International, Inc. Faraday shield localized coil for magnetic resonance imaging
US5144240A (en) * 1985-08-14 1992-09-01 Picker International, Inc. Nmr spectroscopy and imaging coil
NL8502273A (en) * 1985-08-19 1987-03-16 Philips Nv MAGNETIC RESONANCE DEVICE WITH BIRD CAGE R.F. RINSE.
EP0239426B1 (en) 1986-02-07 1990-05-23 General Electric Cgr S.A. Receiving antenna for a nuclear magnetic resonance imaging apparatus
NL8603251A (en) * 1986-12-22 1988-07-18 Philips Nv MAGNETIC RESONANCE DEVICE WITH SWITCHABLE BIRD-CAGE R.F.-COIL.
US4875013A (en) * 1987-03-13 1989-10-17 Hitachi, Ltd. High-frequency coil for nuclear magnetic imaging
US4733190A (en) * 1987-03-16 1988-03-22 Medical Advances, Inc. NMR local coil with adjustable spacing
US4751464A (en) 1987-05-04 1988-06-14 Advanced Nmr Systems, Inc. Cavity resonator with improved magnetic field uniformity for high frequency operation and reduced dielectric heating in NMR imaging devices
FR2615041B1 (en) * 1987-05-07 1989-12-29 Thomson Cgr ELECTROMAGNETIC ANTENNA AND DRIVE ANTENNA FOR A NUCLEAR MAGNETIC RESONANCE APPARATUS PROVIDED WITH SUCH AN ELECTROMAGNETIC ANTENNA
US4799016A (en) * 1987-07-31 1989-01-17 General Electric Company Dual frequency NMR surface coil
US4763076A (en) * 1987-09-01 1988-08-09 The Regents Of The University Of California MRI transmit coil disable switching via RF in/out cable
US4812761A (en) 1987-09-24 1989-03-14 Board Of Regents, The University Of Texas System Electrically parallel equal phase resonant loops for nuclear magnetic resonance surface coils
US4833409A (en) 1987-12-21 1989-05-23 General Electric Company Apparatus for dynamically disabling an NMR field coil
IL85786A (en) 1988-03-18 1991-06-10 Elscint Ltd Hybrid surface coil
US4812764A (en) 1988-03-31 1989-03-14 Varian Associates, Inc. Calibrated decoupling of tightly coupled concentric surface coils
US4820985A (en) * 1988-04-06 1989-04-11 General Electric Company Apparatus for tuning an NMR field coil
GB8814187D0 (en) * 1988-06-15 1988-07-20 Mansfield P Improvements in/relating to surface electrical coil structures
US5055853A (en) * 1988-10-03 1991-10-08 Garnier Robert C Magnetic frill generator
NL8802608A (en) * 1988-10-24 1990-05-16 Philips Nv MAGNETIC RESONANCE DEVICE WITH IMPROVED RF COIL.
US4888555A (en) 1988-11-28 1989-12-19 The Board Of Regents, The University Of Texas Physiological phantom standard for NMR imaging and spectroscopy
US4879515A (en) * 1988-12-22 1989-11-07 General Electric Company Double-sided RF shield for RF coil contained within gradient coils of NMR imaging device
US4916418A (en) * 1989-03-31 1990-04-10 Varian Associates, Inc. Double tuned bird cage coil
US5001428A (en) 1989-08-21 1991-03-19 General Electric Company Method for mapping the RF transmit and receive field in an NMR system
US5017872A (en) * 1990-01-19 1991-05-21 General Electric Company NMR radio frequency coil with dielectric loading for improved field homogeneity
US5053711A (en) 1990-01-19 1991-10-01 General Electric Company Nmr radio frequency coil with improved axial field homogeneity
US5049821A (en) * 1990-02-15 1991-09-17 University Of Florida Continuously variable field of view surface coil for NMR imaging
FR2658955B1 (en) 1990-02-26 1992-04-30 Commissariat Energie Atomique COAXIAL RESONATOR WITH DISTRIBUTED TUNING CAPACITY.
US5075624A (en) * 1990-05-29 1991-12-24 North American Philips Corporation Radio frequency quadrature coil construction for magnetic resonance imaging (mri) apparatus
US5221902A (en) * 1990-10-22 1993-06-22 Medical Advances, Inc. NMR neck coil with passive decoupling
US5196797A (en) 1990-10-31 1993-03-23 Toshiba America Mri, Inc. Method of correcting an asymmetry in an NMR radio frequency coil and an improved radio frequency coil having N-fold symmetry and reduced eddy current
US5304932A (en) * 1990-11-05 1994-04-19 The Regents Of The University Of California Apparatus and method for shielding MRI RF antennae from the effect of surrounding objects
DE4039409A1 (en) 1990-12-10 1992-06-11 Siemens Ag DETERMINATION DEVICE FOR RESONATORS IN A NUCLEAR RESONANCE IMAGE DEVICE
DE4107630C2 (en) * 1991-03-09 1995-01-19 Bruker Analytische Messtechnik Resonator for electron spin resonance spectroscopy
US5185573A (en) * 1991-04-16 1993-02-09 Hewlett-Packard Company Method for focusing of magnetic resonance images
US5510714A (en) * 1991-08-09 1996-04-23 Hitachi, Ltd. Magnetic resonance imaging apparatus and RF coil employed therein
JPH0543606U (en) * 1991-11-01 1993-06-11 株式会社村田製作所 Resonant frequency adjustment mechanism of dielectric resonator
US5349297A (en) * 1992-03-27 1994-09-20 Picker International Inc. Combined self shielded gradient coil and shimset
US5382904A (en) * 1992-04-15 1995-01-17 Houston Advanced Research Center Structured coil electromagnets for magnetic resonance imaging and method for fabricating the same
US5270656A (en) 1992-04-24 1993-12-14 The Trustees Of The University Of Pennsylvania Biplanar RF coils for magnetic resonance imaging or spectroscopy
JP3375089B2 (en) * 1992-06-09 2003-02-10 住友特殊金属株式会社 Thin cavity resonator for electron spin resonance
US5277183A (en) * 1992-06-22 1994-01-11 Medical Advances, Inc. NMR local coil for foot imaging
US5370656A (en) 1993-02-26 1994-12-06 Merocel Corporation Throat pack
US5530355A (en) * 1993-05-13 1996-06-25 Doty Scientific, Inc. Solenoidal, octopolar, transverse gradient coils
US5886596A (en) * 1993-08-06 1999-03-23 Uab Research Foundation Radio frequency volume coils for imaging and spectroscopy
US5557247A (en) 1993-08-06 1996-09-17 Uab Research Foundation Radio frequency volume coils for imaging and spectroscopy
US5514337A (en) * 1994-01-11 1996-05-07 American Research Corporation Of Virginia Chemical sensor using eddy current or resonant electromagnetic circuit detection
US5381122A (en) * 1994-01-14 1995-01-10 General Electric Company Open MRI magnet having a support structure
US5477146A (en) 1994-02-22 1995-12-19 Board Of Regents - Univ Of Ne NMR adjustable volume array
DE4408195C2 (en) 1994-03-11 1996-09-05 Bruker Analytische Messtechnik Magnetic resonance resonator
US5877732A (en) * 1994-04-13 1999-03-02 Resonance Technology Co. Three-dimensional high resolution MRI video and audio system and method
US5530424A (en) * 1994-09-16 1996-06-25 General Electric Company Apparatus and method for high data rate communication in a computerized tomography system
US5530425A (en) * 1994-09-16 1996-06-25 General Electric Company Radiation shielded apparatus for high data rate communication in a computerized tomography system
US5543711A (en) * 1994-11-22 1996-08-06 Picker International, Inc. Multiple quadrature volume coils for magnetic resonance imaging
US5543713A (en) 1994-12-01 1996-08-06 The Regents Of The University Of California Ground breaker for multiple control lines
US5646962A (en) * 1994-12-05 1997-07-08 General Electric Company Apparatus for reducing electromagnetic radiation from a differentially driven transmission line used for high data rate communication in a computerized tomography system
US5594338A (en) * 1995-03-08 1997-01-14 Quantum Magnetics, Inc. Automatic tuning apparatus and method for substance detection using nuclear quadrupole resonance and nuclear magnetic resonance
US5619996A (en) * 1995-03-15 1997-04-15 Medical Advances, Inc. NMR local coil providing improved lower brain imaging
US5539315A (en) * 1995-03-24 1996-07-23 Bruker Instruments, Inc. NMR probe for cross-polarization measurements
US5699801A (en) * 1995-06-01 1997-12-23 The Johns Hopkins University Method of internal magnetic resonance imaging and spectroscopic analysis and associated apparatus
US5744957A (en) 1995-08-15 1998-04-28 Uab Research Foundation Cavity resonator for NMR systems
JP3773537B2 (en) * 1995-11-14 2006-05-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Coaxial cable for magnetic resonance equipment
WO1997026560A1 (en) * 1995-12-29 1997-07-24 Doty Scientific Inc. Low-inductance transverse litz foil coils
JP3702022B2 (en) * 1996-02-09 2005-10-05 株式会社東芝 Gradient field coil
US5841288A (en) * 1996-02-12 1998-11-24 Microwave Imaging System Technologies, Inc. Two-dimensional microwave imaging apparatus and methods
JPH1039997A (en) * 1996-07-18 1998-02-13 Saifasha:Yugen Three-dimensional image data/command input system
JP3670452B2 (en) * 1996-07-31 2005-07-13 株式会社東芝 Coil unit for magnetic field generation and coil winding method
US5757189A (en) * 1996-11-27 1998-05-26 Picker International, Inc. Arbitrary placement multimode coil system for MR imaging
US5998999A (en) 1996-12-12 1999-12-07 Picker International, Inc. Volume RF coils with integrated high resolution focus coils for magnetic resonance imaging
US6177797B1 (en) * 1996-12-19 2001-01-23 Advanced Imaging Research, Inc. Radio-frequency coil and method for resonance/imaging analysis
WO1998037438A1 (en) * 1997-02-25 1998-08-27 Advanced Imaging Research, Inc. Radio-frequency coil array for resonance analysis
US5898306A (en) * 1997-04-09 1999-04-27 Regents Of The University Of Minnesota Single circuit ladder resonator quadrature surface RF coil
DE19721986C1 (en) * 1997-05-26 1998-12-10 Siemens Ag Circularly polarised antenna for magneto-resonance device
US5949311A (en) * 1997-06-06 1999-09-07 Massachusetts Institute Of Technology Tunable resonators
US5903198A (en) * 1997-07-30 1999-05-11 Massachusetts Institute Of Technology Planar gyrator
DE19732783C1 (en) * 1997-07-30 1999-03-04 Bruker Medizintech RF coil system for an MR measuring device
US5990681A (en) * 1997-10-15 1999-11-23 Picker International, Inc. Low-cost, snap-in whole-body RF coil with mechanically switchable resonant frequencies
US6201392B1 (en) 1997-11-07 2001-03-13 Varian, Inc. Coplanar RF probe coil arrangement for multifrequency excitation
US6023166A (en) * 1997-11-19 2000-02-08 Fonar Corporation MRI antenna
US6029082A (en) * 1997-11-24 2000-02-22 Picker International, Inc. Less-claustrophobic, quadrature, radio-frequency head coil for nuclear magnetic resonance
US6040697A (en) * 1997-11-26 2000-03-21 Medrad, Inc. Magnetic resonance imaging receiver/transmitter coils
US6008649A (en) 1997-12-23 1999-12-28 General Electric Company RF coil apparatus for MR system with lateral B0 field
RU98106937A (en) * 1998-04-14 2000-02-10 Пикер Нордстар ОЮ (FI) DEVICE FOR IMAGE FORMATION USING MAGNETIC RESONANCE
JP2000171208A (en) * 1998-12-04 2000-06-23 Toyota Motor Corp Slide type position detecting device
US6236206B1 (en) * 1999-04-23 2001-05-22 Varian, Inc. Globally tunable birdcage coil and method for using same
US7598739B2 (en) * 1999-05-21 2009-10-06 Regents Of The University Of Minnesota Radio frequency gradient, shim and parallel imaging coil
CA2373526A1 (en) * 1999-05-21 2000-11-30 The General Hospital Corporation Tem resonator for magnetic resonance imaging
JP3475123B2 (en) * 1999-05-24 2003-12-08 アイシン・エィ・ダブリュ株式会社 Navigation device and storage medium
US6232779B1 (en) 1999-08-25 2001-05-15 General Electric Company NMR RF coil with improved resonant tuning and field containment
US6396271B1 (en) * 1999-09-17 2002-05-28 Philips Medical Systems (Cleveland), Inc. Tunable birdcage transmitter coil
US6501274B1 (en) * 1999-10-15 2002-12-31 Nova Medical, Inc. Magnetic resonance imaging system using coils having paraxially distributed transmission line elements with outer and inner conductors
JP3549789B2 (en) * 1999-11-26 2004-08-04 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー RF coil and magnetic resonance imaging apparatus
KR20030036663A (en) * 2000-07-31 2003-05-09 리전츠 오브 더 유니버스티 오브 미네소타 Radio frequency magnetic field unit
JP2004511278A (en) * 2000-10-09 2004-04-15 リージェンツ　オブ　ザ　ユニバーシティ　オブ　ミネソタ Method and apparatus for magnetic resonance imaging and spectroscopy using microstrip transmission line coils
US6369570B1 (en) * 2000-12-21 2002-04-09 Varian, Inc. B1 gradient coils
US6420871B1 (en) * 2001-03-02 2002-07-16 Varian, Inc. Multiple tuned birdcage coils
US6771070B2 (en) 2001-03-30 2004-08-03 Johns Hopkins University Apparatus for magnetic resonance imaging having a planar strip array antenna including systems and methods related thereto
DE10124465A1 (en) 2001-05-19 2002-11-21 Philips Corp Intellectual Pty Transmission and receiver coil for a magnetic resonance imaging instrument with an arrangement of independently adjustable resonator segments forming a body coil that allows complete control of the HF field distribution
AU2003233602A1 (en) * 2002-05-17 2003-12-02 Mr Instruments, Inc. A cavity resonator for mr systems
US7538552B2 (en) 2005-01-24 2009-05-26 Koninklijke Philips Electronics N.V. Orthogonal coil for magnetic resonance imaging

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692705A (en) * 1983-12-23 1987-09-08 General Electric Company Radio frequency field coil for NMR
US5045792A (en) * 1985-08-14 1991-09-03 Picker International, Inc. Split and non-circular magnetic resonance probes with optimum field uniformity
US4746866A (en) * 1985-11-02 1988-05-24 U.S. Philips Corporation High-frequency coil system for a magnetic resonance imaging apparatus
US4992737A (en) * 1988-11-18 1991-02-12 Bruker Medizintechnik Gmbh Sample head for NMR tomography
JPH08257011A (en) * 1995-03-28 1996-10-08 Ge Yokogawa Medical Syst Ltd Bird cage coil for magnetic resonance imaging (mri)

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
BALLON D ET AL: "A 64 MHZ HALF-BIRDCAGE RESONATOR FOR CLINICAL IMAGING", JOURNAL OF MAGNETIC RESONANCE, ACADEMIC PRESS, ORLANDO, FL, US, vol. 90, no. 1, 15 October 1990 (1990-10-15), pages 131 - 140, XP000175884, ISSN: 1090-7807 *
G.ADRIANY ET AL.: "Shielded Surface Coils and Halfvolume Cavity Resonators for Imaging and Spectroscopy Applications at 7 Tesla", PROCEEDINGS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE, EIGHTH SCIENTIFIC MEETING AND EXHIBITION, DENVER, COLORADO, USA, 1-7 APRIL 2000, vol. 1, pages 563, XP002180465 *
GASSON J ET AL: "MODIFIED BIRDCAGE COILS FOR TARGETED IMAGING", MAGNETIC RESONANCE IMAGING, TARRYTOWN, NY, US, vol. 13, no. 7, 1995, pages 1003 - 1012, XP000567352, ISSN: 0730-725X *
P.J. LEDDEN ET AL.: "An Four Port Drive Flat-Element Transmission-Line Coil for Brain Imaging at 3T", PROCEEDINGS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE, EIGHTH SCIENTIFIC MEETING AND EXHIBITION, DENVER, COLORADO, USA, 1-7 APRIL 2000, vol. 2, pages 1395, XP002180466 *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 02 28 February 1997 (1997-02-28) *
VAUGHAN J T: "An Improved Volume Coil for High Field MRI", INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE. 7TH SCIENTIFIC MEETING AND EXHIBITION. ISMRM '99. PHILADELPHIA, PA, MAY 22 - 28, 199, INTERNATIONAL SOCIETY OF MAGNETIC RESONANCE IN MEDICINE. SCIENTIFIC MEETING AND EXHIBITION, BERKELEY, CA:, vol. CD-ROM, 22 May 1999 (1999-05-22), pages 167, XP002173499 *

Also Published As

Publication number Publication date
US20020070828A1 (en) 2002-06-13
JP2004504906A (en) 2004-02-19
US20060001426A1 (en) 2006-01-05
CN1466691A (en) 2004-01-07
KR20030036663A (en) 2003-05-09
US20040027128A1 (en) 2004-02-12
CA2417525A1 (en) 2002-02-07
US6958607B2 (en) 2005-10-25
AU2001277234A1 (en) 2002-02-13
EP1305649A2 (en) 2003-05-02
US20060255806A1 (en) 2006-11-16
US6788056B2 (en) 2004-09-07
EP2034325A1 (en) 2009-03-11
US7893693B2 (en) 2011-02-22
WO2002010786A2 (en) 2002-02-07

Similar Documents

Publication Publication Date Title
WO2002010786A3 (en) Open tem resonators for mri
AU6429201A (en) Method and apparatus for edge connection between elements of an integrated circuit
WO2001082476A3 (en) Method and apparatus for selecting at least one desired channel utilizing a bank of vibrating micromechanical apparatus
MXPA02003983A (en) Ultra low frequency transducer and loud speaker comprising same.
AU2002221401A1 (en) Oscillation circuits featuring coaxial resonators
WO2002060072A3 (en) Radio frequency transmitter and methods thereof
SG90050A1 (en) A radiocommunication device and a dual-frequency microstrip antenna
AU2002360464A8 (en) Miniature rf and microwave components and methods for fabricating such components
AU2001238644A1 (en) Electronic supports and methods and apparatus for forming apertures in electronic supports
WO2001069802A3 (en) Integrated radio frequency interface
AU2001262748A1 (en) Frequency interpolating device and frequency interpolating method
IL158763A0 (en) Method and integrated circuit for tuning an lc resonator and electrical apparatus comprising an lc resonator
HK1044260A1 (en) Radio equipment and doppler frequency estimating circuit used for the radio equipment
AU2001266339A1 (en) Frequency interpolating device for interpolating frequency component of signal and frequency interpolating method
IL157930A0 (en) Method for the frequency and time synchronization of an ofdm receiver
GB0118628D0 (en) Magnetic material for high frequencies and high-frequency circuit component
WO2004079938A3 (en) System and method for transmitting ultrawide bandwidth signals
EP1443334A4 (en) High frequency detection method and high frequency detection circuit
EP1686511A3 (en) Broad bandwidth, high impedance transponder for electronic identification system
GB0413830D0 (en) Resonator tuning assembly and method
WO2003040970A8 (en) Process for designing high frequency circuits in multiple domains
AU2003297371A1 (en) System and method for an ultra low noise micro-wave coaxial resonator oscillator using 5/8ths wavelength resonator
AUPR005900A0 (en) Asymmetric radio frequency coils for magnetic resonance
GB0104553D0 (en) Nonreciprocal circuit device and high-frequency circuit apparatus
AU2001242674A1 (en) Cavity resonator having an adjustable resonance frequency

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2417525

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2001277234

Country of ref document: AU

Ref document number: 110/KOLNP/2003

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 1020037001450

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2002516661

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 2001955026

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 018166202

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 2001955026

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020037001450

Country of ref document: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642